Many of us never think about the router after the ISP configures it for the first time. It blends in with the house like furniture, and only gets noticed when something isn't working. While the ISP-provided router is functional and mostly fine for its intended purpose, it's far from the device you'd ideally want running your entire home network. You might not even realize the number of basic features missing or locked down on your ISP router. Add to that the high probability of it having subpar hardware, an older Wi-Fi standard, and an unreasonable amount of control over your own network, and you begin to see the point of replacing it altogether.

Outdated standards and missing features

Your ISP does what's best for them

Most ISPs aren't incentivized to provide you with a modern router. I'm not even talking about Wi-Fi 7 here; Wi-Fi 6E or Wi-Fi 6 routers should be the bare minimum. However, you'll often see your ISP stick you with a Wi-Fi 5 router, even in 2026. It might still "work," but the connection speed and coverage aren't the only things you need on your network. Even the average user needs a low-latency connection, especially as the number of connected devices increases. Older routers can't keep up with the demands of modern homes. Since they lack features like OFDMA (Orthogonal Frequency-Division Multiple Access), simultaneous connection on multiple devices is less efficient in today's high-density residential environments.

Your ISP keeps older routers in circulation to make network troubleshooting easier for its personnel, not because it's the best solution for your network. Often, the default router is missing even standard features, such as parental controls, VLANs, dynamic DNS, and QoS, even when the hardware might support them. The settings that you have access to on your ISP router are likely barebones, allowing you to change only the SSID, password, and a few other basics. Even the security features of your default router are probably outdated, using WPA2 instead of the newer and more resilient WPA3.

The ISP is probably slow to implement firmware updates, too, further limiting the functionality and security of your home network. Enthusiasts and power users are the worst affected, but they probably switch to an aftermarket router soon after getting a new connection, and rightly so. If you have a home lab or elaborate smart home network, you naturally won't be comfortable with an outdated and locked-down router in charge of things. Even if you don't realize it, your ISP router is actively limiting how good your home network can actually be.

Underpowered hardware

Your ISP router has a hard cap

The worst thing about your ISP-provided router might not even be that it's too old or restrictive. It might simply be too weak to support the realities of a modern home network. An average home today might have several smartphones, a smart TV, some laptops and PCs, smart speakers, and some home automation devices. Your ISP might have your entire network struggling to work efficiently on a rather underpowered router, which was never built to support so many devices simultaneously. It's not smart enough to intelligently switch bandwidth priorities on the fly as the network load varies between the client devices.

If you're wondering why your network feels sluggish even with a high-speed plan, your ISP router is to blame. A decent Wi-Fi 6 or Wi-Fi 7 router can easily handle your home network, since it's engineered for modern setups. Your ISP is unlikely to change your router, especially if you're an existing customer. You can threaten to cancel the subscription, but if that doesn't work, buying an aftermarket router and putting the ISP router in bridge mode, to avoid double NAT issues, is the route with the least friction. You'd have to spend around $100–$150 on a Wi-Fi 6E or Wi-Fi 7 router, but you'll be able to give your entire network a massive performance boost. Plus, you'll own the router, which you will be able to take with you when you switch providers, so it's a long-term investment.

Lack of privacy and control

It is what it is

If you're uncomfortable with your ISP lurking on your network, potentially monitoring your traffic and changing settings arbitrarily, you'd want to change your router as soon as possible. Since your ISP insists on its own router for troubleshooting convenience, it can also remotely modify and monitor your network. Even if you trust the ISP not to do any of that, the CPE WAN Management Protocol that they configure leaves your network exposed to other strangers, allowing them to see connected devices, monitor activity, and even change network settings. This hidden backdoor is one of the most glaring flaws of retaining your ISP-provided router.

The degree of control that your ISP likes to maintain on your home network also prevents you from enhancing its capabilities. For instance, most ISP routers have features like port forwarding blocked, limiting you from using self-hosting services. DNS hijacking is another major concern for users who value their network privacy. This allows your ISP to restrict you to specific DNS servers on the network, essentially censoring your activity. Self-hosting a DNS server or replacing the router altogether can help you circumvent this problem.

Bandwidth throttling is also a very real issue on most ISP routers. Depending on your activity, your ISP can throttle your connection speed. If you're a heavy user, you might experience reduced bandwidth at a specific time of day. Your location or the type of content you browse could also be triggers for the ISP to restrict your usage. Your plan might advertise speeds of "up to 500Mbps," but the ISP is free to tweak the bandwidth they allow you access to. The gateway router they install at your place allows them to do this, so replacing it is the only way to completely solve the issue.

Get rid of your ISP-provided router when you can

Most people probably don't know what they're missing out on by sticking to their ISP router. Outdated Wi-Fi performance, underpowered hardware, weak security, missing features, and compromised privacy are reasons enough to replace it with an aftermarket router. You can connect the new router to the ISP router, and put the latter in bridge mode to keep using your connection seamlessly. The practices of ISPs are unlikely to change anytime soon, so the onus of maximizing your network performance lies on you.